09124-0707 GAA 7 (21 Hya)

 
 
09h 12m 26.05s -07° 06' 35.3" P.A. 73.00 sep 0.0 mag 6.10,6.50 Sp A0m dist. 86.73 pc (282.91 l.y.)
 
 
Coord 2000 09124-0707 Discov num GAA   7 Comp Coord arcsec 2000 09 12 26.05 -07 06 35.3
Date first 2016 Date last 2017 Obs 6
Pa first 77 Pa last 73.2 P.A. Now (θ) 73.2°
Sep first 0.0 Sep last 0.001 Sep. Now (ρ) 0.001"
Mag pri 6.10 Mag sec 6.50 delta mag (ΔM) 0.4 Spectral class A0m (white)
Pri motion ra -019 Sec motion ra
Pri motion dec +010 Sec motion dec
Notes N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 21 Hya Var name KW Hya Constellation Hydra SAO 136662
HIP 45184 Tycho2 4891-01371-1 HD 79193 HR 3655
GC 12704 BD BD-06 2845 Flamsteed 21 Hydrae Flamsteed name 21 Hya
Distance 86.73 Distance ly 282.91
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.750468d± 0.000006 Periastron (T)24.421d (1858.943y)± 0.032 Semi-major axis (a)1.329m± 0.007
Eccentricity (e)0.094± 0.004 Inclination (i)92.5°± 0.26 Longitude of periastron (ω)225.38°± 1.6
Node (Ω)75.76°± 0.11 Notesn ReferenceGaA2019
Equinox2000 Last observation2017 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 76.0 0.001
2001-01-01 74.1 0.001
2002-01-01 68.3
2003-01-01 262.1 0.001
2004-01-01 256.8 0.001
2005-01-01 254.4 0.001
2006-01-01 235.8
2007-01-01 78.5 0.001
2008-01-01 76.0 0.001
2009-01-01 74.1 0.001
2010-01-01 68.1
2011-01-01 261.9 0.001
2012-01-01 256.8 0.001
2013-01-01 254.3 0.001
2014-01-01 234.0
2015-01-01 78.4 0.001
2016-01-01 75.9 0.001
2017-01-01 74.0 0.001
2018-01-01 67.9
2019-01-01 261.8 0.001
2020-01-01 256.8 0.001
2021-01-01 254.3 0.001
2022-01-01 231.9
2023-01-01 78.4 0.001
2024-01-01 75.9 0.001
2025-01-01 74.0 0.001
2026-01-01 67.7
2027-01-01 261.6 0.001
2028-01-01 256.7 0.001
2029-01-01 254.3 0.001
2030-01-01 229.4


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds09124-0707a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 09124-0707 GAA 7 (21 Hya) : NOTES
 
 
discov_num notes refcode
GAA 7 KW Hya.
Ma,Mb = 1.975 +/- 0.028 , 1.487 +/- 0.013 \msun, GaA2019
orbital parallax = 11.462 +/- 0.074 mas.
 
 
REFERENCES
 
 
refcode metd author reference
GaA2019 Kv j Gallenne, A., Pietrzynski, G., Graczyk, D., Pilecki, B., Storm, J., Nardetto, N., 2019A&A...632A..31G
GaA2019 +orb Taormina, M., Gieren, W., Tkachenko, A., Kervella, P., Merand, A. & Weber, M.
GaA2019 A&A 632, A31, 2019
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09124-0707 GAA 7 2017 6 73 0.0 6.10 6.50 A0m NO K 091226.05-070635.3

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WDS 09124-0707 GAA 7 (21 Hya) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 09124-0707 GAA 7 (21 Hya) : MEASURES
 
 
No records found.

 
 
WDS 09124-0707 (21 Hya) : VIRTUAL EYEPIECE
 
 

09124-0707 GAA   7A mag 6.1 Sp A0m 09124-0707 GAA   7B mag 6.5 virtual eyepiece
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Radius:
Components only
 
 
WDS 09124-0707 (21 Hya) : ALADIN DSS IMAGE @ 09h 12m 26.05s -07° 06' 35.3"
 
 
 
 
WDS 09124-0707 GAA 7 (21 Hya) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


09124-0707  GAA   7 distance=0' 09124-0709  HJ  807AB distance=3' 09124-0709  HJ  807AC distance=3' 09124-0656  A  2973 distance=11' 09122-0729  A  2972 distance=23' 09110-0736  RST3626 distance=37' 09160-0659  J  2650 distance=54' 09155-0751  RST3629 distance=63' 09079-0708  STF1316BC distance=68' 09079-0708  STF1316AB distance=68' 09079-0708  STF1316AC distance=68' 09079-0708  TOK  64Aa,Ab distance=68' 09143-0817  BU  908A,BC distance=76' 09143-0817  BU  908BC distance=77' 09143-0817  BU  908BD distance=77' 09167-0621  KUI  40 distance=79' 09151-0825  GCB  22 distance=89' 09161-0821  BU  212 distance=93' 09185-0733  J  2651 distance=93' 09159-0831  J  3249 distance=100' 09085-0538  A   123CD distance=105' 09087-0835  KUI  38 distance=105' 09149-0845  WEI  21 distance=106' 09171-0827  J   745 distance=107' 09085-0538  A   123AB distance=107' 09085-0538  A   123AC distance=107' 09096-0847  BRT 426 distance=110' 09169-0538  HJ  127 distance=112' 09170-0531  GWP1155 distance=118' 09057-0816  FAL  26 distance=122' 09169-0524  OSO  27AB distance=123' 09169-0524  OSO  27AC distance=123' 09207-0742  A  1082AB distance=128' 09047-0806  J  2895 distance=129' 09207-0742  BGH   4CA distance=130' 09207-0742  TOK 527CD distance=130' 09068-0848  SKF 252 distance=133' 09109-0455  HJ 2485 distance=133' 09203-0817  GCB  24 distance=138' 09188-0846  LDS3872 distance=139' 09203-0822  AG  339 distance=140' 09204-0821  J  1545 distance=140' 09030-0709  TVB 209 distance=142' 09196-0842  TDS6470 distance=143' 09036-0610  BRT 425 distance=146' 09224-0759  TDS6512 distance=157' 09143-0430  RST4432 distance=159' 09230-0735  UC 1784 distance=160' 09229-0753  BRT 428 distance=163' 09013-0650  A  1340 distance=167' 09167-0941  HDO 122 distance=167' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 09124-0707 GAA 7 73 0.0
Show 09124-0709 HJ 807 AB 291 14.8 3
Show 09124-0709 HJ 807 AC 51 20.0 3
Show 09124-0656 A 2973 12 2.9 11
Show 09122-0729 A 2972 341 4.4 23
Show 09110-0736 RST3626 22 0.2 37
Show 09160-0659 J 2650 19 8.2 54
Show 09155-0751 RST3629 345 1.0 63
Show 09079-0708 STF1316 BC 296 14.2 68
Show 09079-0708 STF1316 AB 136 7.2 68
Show 09079-0708 STF1316 AC 280 8.1 68
Show 09079-0708 TOK 64 Aa,Ab 294 0.4 68
Show 09143-0817 BU 908 A,BC 182 60.8 76
Show 09143-0817 BU 908 BC 233 0.9 77
Show 09143-0817 BU 908 BD 299 34.1 77
Show 09167-0621 KUI 40 287 1.3 79
Show 09151-0825 GCB 22 109 6.4 89
Show 09161-0821 BU 212 198 1.6 93
Show 09185-0733 J 2651 209 3.9 93
Show 09159-0831 J 3249 152 3.7 100
Show 09085-0538 A 123 CD 178 4.6 105
Show 09087-0835 KUI 38 299 1.3 105
Show 09149-0845 WEI 21 15 26.5 106
Show 09171-0827 J 745 214 3.3 107
Show 09085-0538 A 123 AB 327 1.5 107
Show 09085-0538 A 123 AC 149 143.2 107
Show 09096-0847 BRT 426 182 7.8 110
Show 09169-0538 HJ 127 285 12.6 112
Show 09170-0531 GWP1155 202 17.8 118
Show 09057-0816 FAL 26 347 17.2 122
Show 09169-0524 OSO 27 AB 73 10.6 123
Show 09169-0524 OSO 27 AC 321 20.2 123
Show 09207-0742 A 1082 AB 200 0.6 128
Show 09047-0806 J 2895 170 7.6 129
Show 09207-0742 BGH 4 CA 326 135.0 130
Show 09207-0742 TOK 527 CD 342 999.9 130
Show 09068-0848 SKF 252 264 8.4 133
Show 09109-0455 HJ 2485 171 6.1 133
Show 09203-0817 GCB 24 298 7.1 138
Show 09188-0846 LDS3872 72 28.2 139
Show 09203-0822 AG 339 28 6.1 140
Show 09204-0821 J 1545 19 11.2 140
Show 09030-0709 TVB 209 200 1.5 142
Show 09196-0842 TDS6470 106 0.4 143
Show 09036-0610 BRT 425 150 3.6 146
Show 09224-0759 TDS6512 58 0.5 157
Show 09143-0430 RST4432 173 1.5 159
Show 09230-0735 UC 1784 267 23.7 160
Show 09229-0753 BRT 428 191 4.3 163
Show 09013-0650 A 1340 2 0.9 167
Show 09167-0941 HDO 122 93 8.9 167

 
 
WDS 09124-0707 : COMPONENTS
 
 
  A
B pa=73.1°
sep=0.00"
 
 
09124-0707 A
 
 
Componente originario normalizzato AB Name 21 Hya Coord arcsec 2000 091226.05-070635.3 Mag 6.1
Spectral class A0m (white) PmRA -19.00 PmDE 10.0 SAO 136662
HIP 45184 Tycho2 4891-01371-1 HD 79193 HR 3655
GC 12704 BD BD-06 2845 Flamsteed 21 Hydrae Flamsteed name 21 Hya
Tycho2
Tycho2 4891-01371-1 Pflag RAmdeg 138.10851598 DEmdeg -7.10983217
PmRA -18.5 PmDE 19.6 E RAmdeg 4 E DEmdeg 4
E pmRA 1.0 E pmDE 1.0 EpRAm 1991.40 EpDEm 1991.47
Num 13 Q RAmdeg 0.8 Q DEmdeg 0.8 Q pmRA 0.7
Q pmDE 0.7 BTmag 6.381 E BTmag 0.015 VTmag 6.127
E VTmag 0.010 Prox 999 TYC T HIP 45184
CCDM RAdeg 138.10855806 DEdeg -7.10987667 EpRA 1990 1.82
EpDE 1990 1.88 E RAdeg 3.8 E DEdeg 4.1 Posflg
Corr 0.1
SAO
SAO 136662 DelFlag RA1950 PmRA1950 -0.0014
DE1950 PmDE1950 0.015 Vmag 6 SpType A2
Double code Source 70 CatNum 12704 DM BD-06 2845
DMcomp BDsup HD 79193 M HD 0
GC 12704 RA1950rad 2.39967297 DE1950rad -0.12049429 PmRA2000 -0.0011
PmDE2000 0.019
Hipparcos
Catalog H HIP 45184 Proxy RAhms 09 12 26.05
DEdms -07 06 35.6 Vmag 6.1 VarFlag R Vmag H
RAdeg 138.109 DEdeg -7.10988 AstroRef Plx 12.1
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 79193 BD BD-06 2845
CD CP Dm number -06 2845 VIred 0.26
SpType A3m R SpType Coord arcsec 2000 091226.05-070635.6
Hipparcos 2
HIP 45184 Sn 5 So 0 Nc 1
RArad 2.41044912 DErad -0.1240908079 Plx 11.53 PmRA -19.03
PmDE 21.45 E RArad 0.36 E DErad 0.39 E Plx 0.42
E pmRA 0.47 E pmDE 0.4 Hpmag 6.1717 E Hpmag 0.0008
SHp 0.008 VA 0 BV 0.232 E BV 0.008
VI 0.26
 
 
09124-0707 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 091226.05-070635.3 Mag 6.5 Calc delta mag 0.4
Calc coord yes